2 * (C) Copyright 2008 Jeremy Maitin-Shepard
3 * (C) Copyright 2009 John Foerch
5 * Use, modification, and distribution are subject to the terms specified in the
11 require("mime-type-override.js");
13 define_mime_type_table("content_handlers", {},
14 "A mime type table mapping mime types to content handlers. This table "+
15 "will be checked for a match when a navigation event causes Conkeror "+
16 "to encounter a mime type which is not supported by Mozilla. If no "+
17 "appropriate content handler is found in this table, the user will "+
18 "be prompted to choose from among common actions.");
21 * content_handler_context is a datatype for storing contextual information
22 * that can be used by content handlers, such as window, buffer, frame, and
23 * the download launcher object. It will also contain an abort method to
24 * abort the download. Download helper actions are passed an object of this
27 function content_handler_context () {}
31 * The content_handler_* functions below are all things that conkeror
32 * is able to do when Mozilla has invoked download_helper because of an
33 * attempt to navigate to a document of an unsupported mime type.
35 function content_handler_save (ctx) {
36 var suggested_path = suggest_save_path_from_file_name(
37 ctx.launcher.suggestedFileName, ctx.buffer);
38 var file = yield ctx.window.minibuffer.read_file_check_overwrite(
39 $prompt = "Save to file:",
40 $initial_value = suggested_path,
42 register_download(ctx.buffer, ctx.launcher.source);
43 ctx.launcher.saveToDisk(file, false);
46 function content_handler_open (ctx) {
47 var cwd = with_current_buffer(ctx.buffer, function (I) I.local.cwd);
48 var mime_type = ctx.launcher.MIMEInfo.MIMEType;
49 var suggested_action = external_content_handlers.get(mime_type);
50 var command = yield ctx.window.minibuffer.read_shell_command(
51 $initial_value = suggested_action,
53 var file = get_temporary_file(ctx.launcher.suggestedFileName);
54 var info = register_download(ctx.buffer, ctx.launcher.source);
55 info.temporary_status = DOWNLOAD_TEMPORARY_FOR_COMMAND;
56 info.set_shell_command(command, cwd);
57 ctx.launcher.saveToDisk(file, false);
60 function content_handler_open_default_viewer (ctx) {
61 var cwd = with_current_buffer(ctx.buffer, function (I) I.local.cwd);
62 var mime_type = ctx.launcher.MIMEInfo.MIMEType;
63 var command = external_content_handlers.get(mime_type);
65 command = yield ctx.window.minibuffer.read_shell_command(
66 $initial_value = command,
68 var file = get_temporary_file(ctx.launcher.suggestedFileName);
69 var info = register_download(ctx.buffer, ctx.launcher.source);
70 info.temporary_status = DOWNLOAD_TEMPORARY_FOR_COMMAND;
71 info.set_shell_command(command, cwd);
72 ctx.launcher.saveToDisk(file, false);
75 function content_handler_open_url (ctx) {
76 ctx.abort(); // abort download
77 let mime_type = ctx.launcher.MIMEInfo.MIMEType;
78 let cwd = with_current_buffer(ctx.buffer, function (I) I.local.cwd);
79 let cmd = yield ctx.window.minibuffer.read_shell_command(
81 $initial_value = external_content_handlers.get(mime_type));
82 shell_command_with_argument_blind(cmd, ctx.launcher.source.spec, $cwd = cwd);
85 function content_handler_copy_url (ctx) {
86 ctx.abort(); // abort download
87 let uri = ctx.launcher.source.spec;
88 writeToClipboard(uri);
89 ctx.window.minibuffer.message("Copied: " + uri);
92 function content_handler_view_internally (ctx) {
93 var suggested_type = ctx.launcher.MIMEInfo.MIMEType;
94 if (viewable_mime_type_list.indexOf(suggested_type) == -1)
95 suggested_type = "text/plain";
96 var mime_type = yield ctx.window.minibuffer.read_viewable_mime_type(
97 $prompt = "View internally as",
98 $initial_value = suggested_type,
100 ctx.abort(); // abort before reloading
101 override_mime_type_for_next_load(ctx.launcher.source, mime_type);
102 ctx.frame.location = ctx.launcher.source.spec; // reload
105 function content_handler_view_as_text (ctx) {
106 ctx.abort(); // abort before reloading
107 override_mime_type_for_next_load(ctx.launcher.source, "text/plain");
108 ctx.frame.location = ctx.launcher.source.spec; // reload
111 function content_handler_prompt (ctx) {
112 var action_chosen = false;
113 var can_view_internally = ctx.frame != null &&
114 can_override_mime_type_for_uri(ctx.launcher.source);
117 panel = create_info_panel(ctx.window, "download-panel",
118 [["downloading", "Downloading:", ctx.launcher.source.spec],
119 ["mime-type", "Mime type:", ctx.launcher.MIMEInfo.MIMEType]]);
120 var action = yield ctx.window.minibuffer.read_single_character_option(
121 $prompt = "Action to perform: (s: save; o: open; O: open URL; c: copy URL; " +
122 (can_view_internally ? "i: view internally; t: view as text)" : ")"),
123 $options = (can_view_internally ? ["s", "o", "O", "c", "i", "t"] : ["s", "o", "O", "c"]));
126 yield content_handler_save(ctx);
127 action_chosen = true;
130 yield content_handler_open(ctx);
131 action_chosen = true;
134 yield content_handler_open_url(ctx);
135 action_chosen = true;
138 yield content_handler_copy_url(ctx);
139 action_chosen = true;
142 yield content_handler_view_internally(ctx);
143 action_chosen = true;
146 yield content_handler_view_as_text(ctx);
147 action_chosen = true;
151 handle_interactive_error(ctx.window, e);
162 * download_helper implements nsIHelperAppLauncherDialog.
164 * Sometimes, like when following a link, the content type of the document
165 * cannot be displayed by Mozilla. When this happens, Mozilla calls the
166 * `show' method of our download_helper with a handle for the started
167 * download and other contextual information.
169 function download_helper () {}
170 download_helper.prototype = {
171 QueryInterface: generate_QI(Ci.nsIHelperAppLauncherDialog,
172 Ci.nsIWebProgressListener2),
174 show: function (launcher, context, reason) {
175 // content handlers will be passed a context containing references
176 // to the window, buffer, frame, launcher, and an abort method.
177 var ctx = new content_handler_context();
178 ctx.launcher = launcher;
179 ctx.abort = function () {
180 const NS_BINDING_ABORTED = 0x804b0002;
181 launcher.cancel(NS_BINDING_ABORTED);
183 // then set frame, window, and buffer in the context, so that
184 // action handlers can use them if needed.
186 ctx.frame = context.QueryInterface(Ci.nsIInterfaceRequestor)
187 .getInterface(Ci.nsIDOMWindowInternal);
188 ctx.window = get_window_from_frame(ctx.frame);
189 ctx.buffer = get_buffer_from_frame(ctx.window, ctx.frame);
191 ctx.window = get_recent_conkeror_window();
193 // FIXME: need to handle this case perhaps where no windows exist
194 ctx.abort(); // for now, just cancel the download
197 ctx.buffer = ctx.window.buffers.current;
198 ctx.frame = ctx.buffer.focused_frame;
201 // is there anything in content_handlers for this object?
202 var mime_type = launcher.MIMEInfo.MIMEType;
203 var action = content_handlers.get(mime_type) ||
204 content_handler_prompt;
205 co_call(action(ctx));
207 handle_interactive_error(ctx.window, e);
211 promptForSaveToFile: function (launcher, context, default_file, suggested_file_extension) {
216 provide("content-handler");